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Is Yosemite now "safe" for most of us?

On 25/12/2014 02:16, Hadley Wickham wrote:
Worked around, more precisely.

There are still bugs in Yosemite's handling of environment variables, 
and R >= 3.1.2 has workarounds that resolve some of those.  But they can 
still bite when building R or installing packages.

I have found that

unsetenv FOO
setenv FOO value

resolved the issues I had.  (csh syntax, works in bash too.)

If you upgrade to Yosemite, do ensure that you have read the current 
R-admin manual and re-install the software it recommends.  We have found 
that what needed to be reinstalled varied between nominally identical 
systems ... 
http://cran.r-project.org/doc/manuals/r-devel/R-admin.html#OS-X .